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There exists a method for that conversion already:

string renderedValues = string.Join(
 "-",
 Array.ConvertAll<object, string>(values, Convert.ToString)
);

###Update: In framework 4 an overload that takes an object array was added, so it will do the conversion for you:

string renderedValues = string.Join("-", values);

There exists a method for that conversion already:

string renderedValues = string.Join(
 "-",
 Array.ConvertAll<object, string>(values, Convert.ToString)
);

Update:

In framework 4 an overload that takes an object array was added, so it will do the conversion for you:

string renderedValues = string.Join("-", values);

There exists a method for that conversion already:

string renderedValues = string.Join(
 "-",
 Array.ConvertAll<object, string>(values, Convert.ToString)
);

There exists a method for that conversion already:

string renderedValues = string.Join(
 "-",
 Array.ConvertAll<object, string>(values, Convert.ToString)
);

###Update: In framework 4 an overload that takes an object array was added, so it will do the conversion for you:

string renderedValues = string.Join("-", values);